99810071 has 6 divisors (see below), whose sum is σ = 100222416. Its totient is φ = 99399300.

The previous prime is 99810047. The next prime is 99810121. The reversal of 99810071 is 17001899.

It is a de Polignac number, because none of the positive numbers 2^k-99810071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99810001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109106 + ... + 110016.

It is an arithmetic number, because the mean of its divisors is an integer number (16703736).

Almost surely, 2^99810071 is an apocalyptic number.

99810071 is a deficient number, since it is larger than the sum of its proper divisors (412345).

99810071 is an frugal number, since it uses more digits than its factorization.

99810071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 99810071 is about 9990.4990365847. The cubic root of 99810071 is about 463.8648396827.

The spelling of 99810071 in words is "ninety-nine million, eight hundred ten thousand, seventy-one".